[ubuntu] Ubuntu on external drive

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http://ubuntuforums.org – Hi I have a new Samsung series 3 laptop with Window 8 pre-installed, I have had mixed success with loading Ubuntu 12.10 from a USB flash pen onto a USB 3 external drive. The program loads OK but when I try to boot back into Windows 8 I get a screen saying GRUB 2 :press tab for further information (or something like that), I then have to factory reset my machine to get it going again. On my old laptop using Windows 7 it was a simple job and I know that Windows 8 present difficulties. Before I just created EXT 4 & swap partition is are what I have been using in Windows 8. Now however I am fa (Hardware)